зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
3.7 KiB
C++
122 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Intel
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* Corporation. Portions created by Intel are
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* Copyright (C) 1999 Intel Corporation. All
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* Rights Reserved.
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*
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* Contributor(s): Yueheng Xu <yuheng.xu@intel.com>
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*
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* This file is a newer implementation of GB2312 converters developed by
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* Intel Corporation intended to replace the existing mozilla GB2312 converters
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* developed by Netscape Communications in mozilla.
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*
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*/
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// =======================================================================
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// Original Author: Yueheng Xu
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// email: yueheng.xu@intel.com
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// phone: (503)264-2248
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// Intel Corporation, Oregon, USA
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// Last Update: September 7, 1999
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// Revision History:
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// 09/07/1999 - initial version. Based on exisiting nsGB2312ToUnicode.cpp. Removed
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// dependecy on those shift/map tables. Now we only depend on gbku.h.
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// 09/28/1999 - changed to use the same table and code as GBKToUnicode converter
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// ======================================================================================
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#include "nsGB2312ToUnicodeV2.h"
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#include "nsUCvCnDll.h"
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#define _GBKU_TABLE_ // to use a shared GBKU table
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#include "gbku.h"
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//----------------------------------------------------------------------
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// Class nsGB2312ToUnicodeV2 [implementation]
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//----------------------------------------------------------------------
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// Subclassing of nsTablesDecoderSupport class [implementation]
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NS_IMETHODIMP nsGB2312ToUnicodeV2::GetMaxLength(const char * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength)
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{
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*aDestLength = aSrcLength;
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return NS_OK;
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}
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NS_IMETHODIMP nsGB2312ToUnicodeV2::ConvertNoBuff(const char* aSrc,
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PRInt32 * aSrcLength,
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PRUnichar *aDest,
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PRInt32 * aDestLength)
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{
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PRInt32 i=0;
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PRInt32 iSrcLength = (*aSrcLength);
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DByte *pSrcDBCode = (DByte *)aSrc;
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PRUnichar *pDestDBCode = (PRUnichar *)aDest;
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PRInt32 iDestlen = 0;
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PRUint8 left;
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PRUint8 right;
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PRUint16 iGBKToUnicodeIndex = 0;
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nsresult rv = NS_OK;
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for (i=0;i<iSrcLength;i++)
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{
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pSrcDBCode = (DByte *)aSrc;
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pDestDBCode = aDest;
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if ( iDestlen >= (*aDestLength) )
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{
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rv = NS_OK_UDEC_MOREOUTPUT;
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break;
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}
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if ( *aSrc & 0x80 )
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{
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if(i+1 >= iSrcLength)
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{
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rv = NS_OK_UDEC_MOREINPUT;
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break;
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}
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// The source is a GBCode
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left = pSrcDBCode->leftbyte;
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right = pSrcDBCode->rightbyte;
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iGBKToUnicodeIndex = (left - 0x0081)*0x00BF + (right - 0x0040);
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*pDestDBCode = GBKToUnicodeTable[iGBKToUnicodeIndex];
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aSrc += 2;
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i++;
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}
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else
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{
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// The source is an ASCII
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*pDestDBCode = (PRUnichar) ( ((char )(*aSrc)) & 0x00ff);
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aSrc++;
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}
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iDestlen++;
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aDest++;
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*aSrcLength = i+1;
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}
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*aDestLength = iDestlen;
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return rv;
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}
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